Helpful tool
This app helps me stay in tune with my cycle and is handy in knowing when to be extra careful with birth control. I prefer to avoid hormonal contraception so this app is very handy in keeping track with the rhythm method. Be sure to keep it calibrated though as our bodies arent exactly clockwork as the app is quite rigid in that area.
Snowsister34568 about
Cycles: Period & Cycle Tracker, v2.1